عَنْ عَائِشَةَ زَوْجِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ قَالَتْ: سَمِعْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ يَقُولُ: ((مَنْ صَلَّى صَلَاةً لَا يَقْرَأْ فِيهَا بِأُمِّ الْقُرْآنِ فَهِيَ خِدَاجٌ))
The wife of the Messenger, Sayyida Aisha (may Allah be pleased with her), says: I heard the Messenger of Allah (peace and blessings be upon him) say: Whoever offers such a prayer in which he does not recite Umm al-Qur'an, then that prayer will be incomplete.